fhall

Hi everyone! I've been into marbles for about 2 months now. My friend's father who is 79 asked me to help him sell his marbles. I told him I would have to know what I'm looking at in order to do so. So I have been studying and studying. And now....I'm addicted lol . I've come across a few that leave me stumped. I've pretty much got down id through machine markings. Patch and ribbons came easy to me. But then I started studying swirls and slags! My brain really gets twisted on those. But I have a few pics of a few mins if I could get help with please and thank you.